However, the spokesperson says the growing waiting list is still open in case any buyers must cancel their order.
The spokesperson also says that 12 P1s have been built thus far, which are either already in possession of their owners or en route to them. At this stage, no North America-bound P1s have been completed - all 12 will be based in Europe.
"We set ourselves the target to be sold out by year-end off the back of first cars being delivered to customers in September , the fiftieth anniversary of McLaren's founding," McLaren told Top Gear. "A combination of the first feedback from customers and Top Gear's review of the P1 has seen us cross the line a little sooner than we had planned."
If you still want a hybrid supercar - one that isn't sold out - there's always the LaFerrari or the Porsche 918 Spyder, the latter of which is a relative bargain, starting at $845,000.